package com.atguigu.gulimall.product.exception;

import com.atguigu.common.exception.BizCodeEnum;
import com.atguigu.common.utils.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.util.HashMap;
import java.util.Map;

/**
 * 集中处理所有异常
 */
@Slf4j
@RestControllerAdvice(basePackages = "com.atguigu.gulimall.product.controller")
public class GulimallExceptionControllerAdvice {

    @ExceptionHandler(value = MethodArgumentNotValidException.class)
    public R handleValidException(MethodArgumentNotValidException e){
        log.error("数据校验出现问题{},异常类型{}",e.getMessage(),e.getClass());
        BindingResult bindingResult = e.getBindingResult();

        Map<String,String> errMap = new HashMap<>();
        bindingResult.getFieldErrors().forEach((fieldError -> {
            String message = fieldError.getDefaultMessage();
            String field = fieldError.getField();
            errMap.put(message,field);
        }));
        return R.error(BizCodeEnum.VALID_EXCEPTION.getCode(),BizCodeEnum.VALID_EXCEPTION.getMessage()).put("data",errMap);
    }



    @ExceptionHandler(value = Throwable.class)
    public R handleException(Throwable throwable){
        log.error("数据校验出现问题{},异常类型{}",throwable.getMessage(),throwable.getClass());
        return R.error(BizCodeEnum.UNKNOWN_EXCEPTION.getCode(), BizCodeEnum.UNKNOWN_EXCEPTION.getMessage());
    }


}



























